acl_get_file man page on DragonFly

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ACL_GET(3)		 BSD Library Functions Manual		    ACL_GET(3)

NAME
     acl_get_fd, acl_get_fd_np, acl_get_file — get an ACL for a file

LIBRARY
     library “libposix1e”

SYNOPSIS
     #include <sys/types.h>
     #include <sys/acl.h>

     acl_t
     acl_get_file(const char *path_p, acl_type_t type);

     acl_t
     acl_get_fd(int fd);

     acl_t
     acl_get_fd_np(int fd, acl_type_t type);

DESCRIPTION
     The acl_get_file(), acl_get_fd(), and acl_get_fd_np() each allow the
     retrieval of an ACL from a file.  acl_get_file() is a POSIX.1e call that
     allows the retrieval of a specified type of ACL from a file by name;
     acl_get_fd() is a POSIX.1e call that allows the retrieval of an ACL of
     type ACL_TYPE_ACCESS from a file descriptor.  acl_get_fd_np() is a non-
     portable form of acl_get_fd() that allows the retrieval of any type of
     ACL from a file descriptor.

     This function may cause memory to be allocated.  The caller should free
     any releasable memory, when the new ACL is no longer required, by calling
     acl_free(3) with the (void *)acl_t as an argument.

     The ACL in the working storage is an independent copy of the ACL associ‐
     ated with the object referred to by fd.  The ACL in the working storage
     shall not participate in any access control decisions.

IMPLEMENTATION NOTES
     DragonFly's support for POSIX.1e interfaces and features is still under
     development at this time.

RETURN VALUES
     Upon successful completion, the function shall return a pointer to the
     ACL that was retrieved.  Otherwise, a value of (acl_t)NULL shall be
     returned, and errno shall be set to indicate the error.

ERRORS
     If any of the following conditions occur, the acl_get_fd() function shall
     return a value of (acl_t)NULL and set errno to the corresponding value:

     [EACCES]		Search permission is denied for a component of the
			path prefix, or the object exists and the process does
			not have appropriate access rights.

     [EBADF]		The fd argument is not a valid file descriptor.

     [EINVAL]		The ACL type passed is invalid for this file object.

     [ENAMETOOLONG]	A component of a pathname exceeded 255 characters, or
			an entire path name exceeded 1023 characters.

     [ENOENT]		The named object does not exist, or the path_p argu‐
			ment points to an empty string.

     [ENOMEM]		Insufficient memory available to fulfill request.

     [EOPNOTSUPP]	The file system does not support ACL retrieval.

SEE ALSO
     acl(3), acl_free(3), acl_get(3), acl_set(3), posix1e(3)

STANDARDS
     POSIX.1e is described in IEEE POSIX.1e draft 17.  Discussion of the draft
     continues on the cross-platform POSIX.1e implementation mailing list.  To
     join this list, see the FreeBSD POSIX.1e implementation page for more
     information.

HISTORY
     POSIX.1e support was introduced in FreeBSD 4.0, and development contin‐
     ues.

AUTHORS
     Robert N M Watson

BUGS
     These features are not yet fully implemented.  In particular, the shipped
     version of UFS/FFS does not support storage of additional security
     labels, and so is unable to (easily) provide support for most of these
     features.

BSD			       January 28, 2000				   BSD
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